Lodovico Menozzi
Live Demonstration: Cloud Based Rotating Machinery Fleet Wide Condition Monitoring

Fleetwide Monitoring (FWM) is the implementation of applications for monitoring, maintaining and optimizing assets from a centralized location. Fundamentally, FWM involves monitoring assets within a fleet of assets to detect operational and equipment problems earlier enough to mitigate damage, manage risk, identify performance problems, and manage business and market conditions or risks. A key part of FWM involves the use of advanced online monitoring technologies. The goal of FWM is intelligent top-down approach to plant maintenance and scheduling. The goal is accomplished by the move toward centralized monitoring and diagnostic centers, with the integration of advanced monitoring applications.

Jan Breuer, Jaroslav Roztocil, Vojtech Vigner
Live Demonstration: Precise Time Protocol Tester

Node synchronization can be implemented in an Ethernet network using time protocols; e.g. IEEE 1588. Active network components like switches and routers influence the accuracy of synchronization because they affect the packet delay variation in the network. Therefore, the delay is not constant and, as well, the delay in one direction is not equal to the delay in the opposite direction. An additional device information is available in a 12th IMEKO TC10 Workshop article.

Pasquale Arpaia, Pasquale Cimmino, Umberto Cesaro, Nicola Moccaldi
Drug Under Skin Meter (DUSM): a portable bio-impedance spectroscope for assessing transdermal drug delivery

An instrument prototype, based on a measurement method relating bioimpedance and amount of drug present in a tissue under test, was realized. The instrument assesses the amount of drug conveyed through the skin by measuring impedance spectrum before and after administration. In compliance with safety regulations, the stimulus signal does not exceed the peak value of 200 µA well below the threshold of 424 µA provided by the IEC-60601 standard. In this paper, after illustrating the conceptual and physical design of hardware, firmware, and software interface, a preliminary metrological characterization of the prototype is described. This realization opens interesting scenarios to pursue strategies of immediate efficacy assessment for all non-invasive systems for intradermal conveying.

Urko Leturiondo, Oscar Salgado, Diego Galar
Test rig model development and validation for the diagnosis of rolling element bearings

In the context of condition based maintenance, carrying out diagnosis and prognosis processes is a key. For that purpose the evaluation of the condition of a machine is necessary, for which the development of physical models is useful as the response of the modelled system can be obtained in different operating conditions. In this paper, an electromechanical model for a rotary machine is presented, making special emphasis on the modelling of rolling element bearings. Thus, the response to different damaged conditions is evaluated. The proposed model is validated by comparing the simulation results with experimental signals acquired by tests carried out at different operating conditions. This comparison shows a good agreement as differences less than 0.6 % for the model of the bearing and differences up to the 10 % for the modelling of the rest of the elements are obtained.

Lilli Haar, Katharina Anding, Sven Schröder, Matthias Hauptvogel, Gunther Notni
Image Processing of Light-Scattering Images for Qualitative Surface Analysis

Light scattering analysis is already used for roughness measurements, but it is also possible to determine defects on surfaces with this method. Therefore, the scattering distribution is recorded and analyzed using image processing. The defects lead to specific characteristics in the images, which can be assigned to them. In this process the segmentation has an important role because only the best possible separation of the error characteristic leads to good results in the further steps of the image processing chain and in the classification process. For this reason, various segmentation methods were applied to two datasets of images of the scattering distributions and their quality was evaluated by means of the obtained recognition rates.